{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x15d9bb1ffa79a29422c6dc82dd09c4a7196d5dea1aae1fba42591d9c6e4292a6",
    "signature": "0x538be094974c126f9145f803b14c026ef31a83a17c378eab65d3526d4016e8b55948bc10f8958fdea75540235de4177416140db66c1577b02100e04f1056f6c41c",
    "signer": "0x91c1cB8b04749B3830411c3517704c393ecB16e3",
    "userId": "289388272"
  }
}